Spring-beard-needle mechanism



Aug. 7, 1928.

W. 5. PARKER SPRING BEARD RBEDLI IEGHARISI Filed April. 27, 19%5Patented Aug. 7, 1928.

UNITED STATES PATENT OFFICE.

WILLIAM S. PARKER, 01 ROCKFORD. ILLINOIS. ASSIGNOR TO BURSON KNITTINGGOMPANY, 0F ROCKFORD. ZLLINOIS, A CORPORATION OF ILLINOIS.

SPRING-BEARD-NEEIJLE MECHANISM.

Application filed April 27, 1925.

This invention relates to spring beard needle mechanism for straightknitting machines.

The primary purpose of the invention is to provide improved means forclosing the needle beard and for pressing the needle against its seat onthe bed.

In furtherance of this general object my invention contemplates theprovision of a combined beard closer and needlepressing spring in asingle member which in the pre ferred embodiment. also serves as atiller spring in the needle slot and is 'iivolally but removably locatedin such slot. in. this form of the invention the pivotal connectionserves to properly locate said member in the needle slot. It also allowssaid member to be actuated by a suitable cam which imparts the beardclosing movement. A. further advantage is that the spring which pressesthe needle against its scat also serv s to return the beard closer tothe normal jHJdtlOll.

I have also aimed to provide an improved organization of partscomprising a spring beard needle, :1 Web holder, a c mbinedneedle-[messing and beard closing m mber, and a cam for actuating saidmember to close the beard.

Other objects and attendant aduuuages will be appreciated by thoseskilled in this art as the invention becomes better understood byreference to the following ti-scrip tion when considered in connectionwith the accompanying drawing in whi -h Figures 1, 2, and l are tragmenlaly vertical sections through the needle bed of a straightknitting machine embodying my iniprovements, showing positions which theparts occupy at successive stages in hurtling.

My invention is adapted for either a single or double row straightknitting ma hine; and in the present drawings 11 have shown itsapplication to only a single row, it being understood that thisapplication will be duplicated for a double row.

The needle bed :3 may be of any suitable or preferred constructionhaving a series of needle slots 6. A spring beard needle designatedgenerally by i. disposed in each slot. is adapted to be moved lengthwisetherein by suitable means such as a jack 8 to perform the knittingoperation. It is desired to yieldingly urge the needle against a seat 9on the bed with just sufiicient pressure to Serial No. 26,015.

properly hold the needle in position. This is accomplished by means of afiller spring comprising in this instance a. shank 11 and a springportion 12 joined at one end and formed from a single piece of metal. Inorder to locate and hold this spring member in the needle slot the shankis provided at one end with a lug 13 which enters a recess 14 in the topWall of said slot. This con" struction also enables quick removal of thespring member through the upper end of the needle slot as is requiredfor assembling and disassembling purposes. Said lug 13 has preferably anarcuate face, and the face. of the recess or socket 14 is similarlyshaped so as to provide a pivotal connection with the bed structure, thepurpose of which will be presently apparent.

Said spring member has an additional function, namely, that of a beardcloser and, to this end, is shaped at the juncture between the shank .11and spring portion 12 to provide a beard closing portion 15. The underside of this portion is shaped to provide downwardly converging surfaces16 and 17 the purpose of which will be pres ently described.

The web holder designated generally by 18 may be of any suitable orpreferred construction and at. present has a web book 19 and a shank 2iin otiset relation mounted to slide in slots 22 and 23 respectively, inthe bed structure, perpendicular to the needle slot. Suitable means suchas a cam 2-1 may be employed for advancing and retractingthe web holder.

The heard closing movement may be imparted "by any suitable means such,for example, as a cam 25 adapted to pass over the beard closing end 15of the spring member and press said end downwardly in a beard closingmovement, this movement being permitted by reason of the pivotalconnection ot' the shank 11 with the bed structure established by thelug 13 in the recess 14. \Vhen the am 25 is withdrawn the beard close rwill bereturned to its normal position needle by the web holder when theneedle is advanced to take new yarn as shown in Fig. 2. At this time thenew yarn 27 will be laid across the needle by a yarn distributor Whenthe needle drawn down the yarn :3? will be drawn beneath the. needlebeard into the eye of the needle as shown in Fig. 3. During this downstroke of the needle and just before the needle beard reaches the loop26 the rain 25 will act to depress the beard rlosing end 15 of thespring member suitieiently to bring its inclined surface 17 into thepath of the beard and closethe latter. The r-losed end of the board willtherefore be in :V'positiou to pass through the loop 26. In view of theshort interval that the heard is b ld elosed the inclined surface 16permits the loop to pass over the point oi the heard before the latteris released by the cam 2-. As the needle rontinues in this down strokethe web holder will be withdrawn by action of the cam 2- thuswithdrawing the web book 15) and permitting the closed needle board topass through the loop 20 which will be shed over the new loop 2? as thelatter drawn down by the needle. The iinal position of the knittingoperation is shown in Fig. 4, in which the new loop QT is held both bythe needle and the web holder.

It is believed that. the foregoing conveys a clear understanding of theobjects pref aced aboie-and while I have illustrated but. a singleworking embodiment it should be understood that changes may be made indetails of construction without departing from the spirit and scope ofthe invention as expressed in the appended claims in which-- I claim:

1. A singie part for a knitting machine equipped with spring beardneedles, (0111- prising a needle-pressing spring portion for seating aneedle in its bed and a beard closer portion.

Spring beard needle mechanism including a single member having a.resilient part for pressing" the needle against its bed and another partfor closing the heard. the re silient part serving normally to move thelast mentioned part from beard closing position to retrmrted position.

3. The combination with a spring beard needle in the bed of a knittingmachine, of a unitary beard closer and needle-pressing filler spring forseating the needle in the bed.

4. Spring beard needle mechanism including a needlepressing leaf springfor seating a needle in its bod having a beard-closing portion at one.end.

5. Spring beard needle mechanism including a pivoted beard-closingmember having integral therewith a needle-pressing spring for seating aneedle in its bed.

(1. In combination with a needle bed baving a needle slot and a springbeard needle therein, of a leaf spring in said slot for pressing theneedle against the bed, and a beard closer on the spring.

7. The combination with a spring beard needle, of a shank having alocating pivot at one end, a beard closing portion at the opposite end,and a leaf spring extending longitudinally relative to the shank and acting between it and the needle to exert pres sure on the needle at apoint intermei iiate the ends of the shank.

8. Spring beard needle mechanism including a. single member for pressingthe needle against its bed and for closing the beard, said member beingpivotally mouhted and adapted to swing on its pivot for closing theheard.

9. Spring beard needle mechanism includinga single member for pressingthe needle against its bed and for closing the beard said member beingpivotally mounted and adapted to swing on its pivot for closing thebeard, and being reniovahly held in position by the pressure of theneedle-pressing spring.

1". In a knitting machine, an integrally formed beard closer and tillerspring adapted to fill the needle slot and press the needle against itsseat. and further adapted to be moved in a beard closing movement.

11. In a knitting machine. an integrally formed member providing a shankand a. necdlepressihg spring for seating a needle in its bed joined atone end and shaped at the juncture thereof to provide a beard closingportion.

12. In a. knitting machine. an integrally formed member providing ashank and a needle-pressing.spring joined at. one end and shaped at thejuncture thereof to provide a beard closing portion. and a locating logon said shank at the end thereof remote from the beard closer. uponwhich lug said member is adapted to pivot in the beard closing movement.

13. In a knitting machine. the combination with a needle bed. a springbeard needle operated, therein and an element. for imparting a beardclosing movement, of a single part arranged for operation by the beardclosing element to close the heard of the needle, and also arranged topress the needle to its bed.

14. In a knitting machine, the combination with a needle bed, a springbeard nee dle operated therein and an element for imparting a beardclosing movement. of a single art arranged for 0 )eration by the wardclosing element. to ciose the heard of the needle, and also arranged topress the needle to its bed and return itself to normal retractedposition after the beard closing operation.

15. In a knitting machine. the combinm tion with a needle bed, a springbeard needle operating therein, and an element for imparting a beardclosing movement, of a single element havin a rigid part and a resilientpart for er orming four functions to witz-the rigi part interlocking inthe needle bed to hold the element detaohably in place therein and alsoproviding a beard closing portion arranged for operation by the beardclosing element to close the heard 10 of the needle, and the resilientportion serv- CERTIFICATE OF Patent No. 1,679,624.

WILLIAM S.

CORRECTION.

Granted Angust 7; 1928, to

PARKER.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows:

Page 3, line 16. claim 16, for the numeral "16" read 15''; and that thesaid Letters Patent should be read with this correction therein that thesame may conform to the record of the case in the Patent Office.

Signed and sealed this 28th day of August, A. D. 1928.

(Seal) M. J. Moore. Acting Commissioner of Patents.

dle operating therein, and an element for imparting a beard closingmovement, of a single element havin a rigid part and a resilient partfor er orming four functions to witz-the rigi part interlocking in theneedle bed to hold the element detaohably in place therein and alsoproviding a beard closing portion arranged for operation by the beardclosing element to close the heard 10 of the needle, and the resilientportion serv- CERTIFICATE OF CORRECTION.

Patent No. 1, 679, 624.

WILLIAM S.

Granted Angust 7; 1928, to

PARKER.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows:

Page 3, line 16. claim 16, for the numeral "16" read 15''; and that thesaid Letters Patent should be read with this correction therein that thesame may conform to the record of the case in the Patent Office.

Signed and sealed this 28th day of August, A. D. 1928.

(Seal) M. J. Moore. Acting Commissioner of Patents.

